Emil schwoerer



No Model.) E. SOHWOERER.

TUBE FOR SUPERHEATING STEAM.

Patented Mar. 6;- 1894.

INVENTOR; Emxk ccwu exec;

WITNESSES:

A TORNEY UNITED STATES PATENT OFFICE.

EMIL SCHWOERER, OF OOLMAR, GERMANY.

TUBE FOR SUPERHEATING STEAM.

SPECIPIGATION forming part of Letters Patent No. 515,974, dated March 6,1894. Application filed October 12, 1891. Serial No. 408,479. (Nomodel.)

To all whom it may concern:

Be it known that I, EMIL Sonwonnnn, a subject of the Emperor of Germany,residing at Colmar, Alsace, Germany, have invented new and usefulImprovements in Tubes for Superheating Steam, of which the following isa specification.

My invention has reference to improvements in the construction ofsuperheating tubes or conduits, and has for its object to increase theworking capacity of such tubes and at the same time to considerablyrestrict the dimensions of steam superheating apparatus.

To this end my invention consists essentially in the arrangement in thesuperheating tubes, or in the steam conduits connected therewith, otbaffleplates ofiering considerable resistance to the passage of thesteam and consequently having a favorable influeuce on the superheatingof the same.

The nature of my said invention will best be understood when describedin connection with the annexed drawings, in which- Figure l is alongitudinal section of a superheating tube embodying my invention. Fig.2 is a cross-section of the same. Figs. 3 and 5 are longitudinalsections of modifications. Figs. 4 and 6 are the respectivecrosssections thereof. M

Similar letters of reference designate corresponding parts throughoutthe several views of the drawings.

Referring at present to Figs. 1 and 2, I construct the superheating tubewith a series of internal longitudinal ribs a, and with a series oftransverse external ribs a, both sets of ribs projecting radially fromthe body of the tube. These ribs ca 0. may be made continuous as shown,or they may be made up of a number of short sections. In either casethey could also be made to extend spirally around the tube. i

To increase the efficiency of tubes of this construction, either with orwithout the inner ribs a, I provide the same with battle-plates warranged at suitable distances apart in the interior of the tube. Theplates act as an obstacle to the passage of the steam and deflect thesame outwardly against the hot walls of the tube.

The baffle-plates may be arranged in diverse ways within the tube, forinstance, as lllustrated in Figs. 3 and at, they are arranged to projectalternately from opposite sides otthe tube, so as to cause the steam totakea sinuous course in its passage therethrough. The internal ribs aare in this case omitted.

In Figs. 5 and 6, the baffie-plates areplaced centrally as in Figs. 1and 2, but are held in their central positions by radial arms 7).

While hereinbefore I have described the steam as passing through thetubes, itis evident that the steam may be superheated by passing itaround the tubes, while the hot gases are passed through the tubes. Thebaffle plates may also be arranged at any desired angle to thelongitudinal axis of the tube, instead of at right angles to said axisas shown in the drawings.

By combining bafile plates and ribs in one structure the greatestpossible utilization of the heat of combustion is attained, consequentlyan apparatus with such tubes is also especially valuable when but arestricted space is available for a super-heating apparatus. In casesWhere the greatest utilization of heat is desired I prefer to use tubesprovided with both internal and external ribs.

What I claim as new is- 1. A steam superheating-tube provided with ribs,as described, and with aseries of transverse battle plates w arranged atsuitable distances apart in the interior of the tube for deflecting thesteam passing through the tube against the periphery, substantially asdescribed.

2. A steam superheating-tube provided with ribs as described, and withtransverse bafiie plates w arranged at suitable distances apart in theinterior of the tube and projecting alternately from opposite sides fordeflecting the steam in a zig-zag course alternately against oppositesides of the tube, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

EMIL SOHWOERER.

Witnesses:

LUDWIG GLASER, G. HiiLsMAnN.

